More on Vonage

’It’s important to note that every Internet phone service provider has their own distinct architecture for their network,” he says. “It’s constructed differently, done in its own unique way. So each provider has to do their own analysis.”

The bottom line: “It would be inappropriate to assume that what applies to other [VoIP] companies applies to all companies.”

SunRocket recently signed up its 200,000th customer. Not perhaps in Vonage’s league, but healthy four-fold growth since 2006. The company is taking a “strategic” approach to growth, says Lustig. “It’s a deliberate strategy to keep costs in check.”